Final answer:
Nonel tubing is designed for initiating explosives and is not suitable as a lowering line for loading a blast hole due to safety issues and the mechanical demands of the task.
Step-by-step explanation:
No, Nonel tubing should not be used as a lowering line when loading a blast hole. Nonel tubing, or non-electric tubing, is a type of shock tube for transmitting the detonation signal in blasting operations and is designed specifically for initiating explosives. It is not meant to bear weight or to be used as a mechanical tool.
When loading a blast hole, proper equipment that is rated to handle the weight of materials and the conditions of the environment is essential for both safety and efficiency. Instead of Nonel tubing, a proper lowering line or a loading stick that can withstand the mechanical demands should be used. The process of loading a blast hole must adhere to strict safety guidelines to prevent accidents, ensure the effectiveness of the blast, and protect the individuals involved in the operation.